Internal and external harmony
Chinese idiom, Pinyin is n è ij ù nwaih é, which means stern in heart and kind in appearance. It comes from the miscellaneous records of Xiaoting · sun wendinggong.
The origin of Idioms
In the miscellany of Xiaoting · sun wending Gong written by Zhao Yao of Qing Dynasty, it is said that "the Gong is solemn and harmonious inside and outside, and his counterparts, such as Deng Tai, Hua, and sitting in the spring breeze, are not so masculine and Xixi. They are stored in the Yan room, but have already placed people on the Qingyun."
Idiom usage
Used as a predicate or attributive; used as a person
Internal and external harmony
give mature consideration to all aspects of a question - miàn miàn jiē dào